Priming device



May 29, 1.923. 1,457,033

c. HfJoRGENsr-:N ET AL PRIMING DEVICE Filed Feb. '7, 192].

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Patented May 29, 1923.

vUNITED STATES PATENT omer..

CLARENCE H. JOBGENSEN AND PETER J. JORGENSEN, OF WAUPACA, WISCONSIN,

ASSIGNORS TO JOBGENSEN MANUFACTURING COMPANY, OF WAUPACA, WIS- CONSIN, A CORPORATION OF WISCONSIN.

PBIHING DEVICE.

Application led February 7, 1921. Serial No. 442,923. v

To all whom it may concern:

Be it known that we, CLARENCE H. JonoENsEN and PETER J. JonoENsnN citizens pf the United States, residing at Waupaca, 1n the county of Waupaca and State of Wlsconsin, have invented certain new and useful Improvements in Priming Devices, of which the following isa specificatlon.

Our invention relates to priming devices for internal combustion engines and 1s an improvement upon the riming device covered by United States tters Patent No. 1,190,539 granted to us on the 11th day of Ju1y,1916.

Our previous patent covers a system of priming wherein gas is takenfrom the gas lines and forced into the manifold at a desired point. The present appllcation relates to an improved valve and pump piston for use in such a system, and more specifically to a means of connecting the valve member to the piston so that when the device is closed the valve member seats properly in the valve seat and eliminates any danger of. leakage of the valve.

In the operation of internal combustion engines it is highly important that no leaks should occur which will reduce the suction formed by the pistons of the engine in its operation, which suction is relied upon to draw the fuel into the cylinders of the engine and, in many systems, to draw the fuel from the fuel supply tank to a smaller supply tank located adjacent the engine and thence through the manifold into the engine cylinders. It is apparent that any leakage in any of the pipes or connections leading to the engine or to the manifold and through which air could gain entrance to the engine cylinders, results in the loss of efficiency in the operation of the engine and also makes it impossible to secure the proper mixture of fuel.

In our improved device a flexible connection is provided between the piston and the valve of our priming pump so that the passage leading from the fuel tank into the valve seat and from the valve seat to the intake manifold of the engine are so tightly closed that there is no possibility of leak. Also because of the flexible connection the valve member seats easily and properly with each operation of the device, without 1n any Figure 2 is a view of the priming pump and valve partially in section and partially in elevation and showing the valve member flexibly connected to the piston ferring now specifically to the drawings and in which like reference charac- .ters refer to like parts throughout, 1() is an internal combustion engine having an auxlliary fuel tank 11 secured thereto. A T 13 is interposed between the bottom of the tank and the usual drain pet cock 12. A primin pump 14 is secured to the dash. of the vehicle 15 and has a pipe 16 leading' thereto from this T 13 underneath the fuel supply tank 11. A second pipe 17 is connected to the manifold 18 of the engine by means of Ts 19 and 20 and L 21 and through which fuel is forced into the manifold adjacent the intake valves of the engine cylinders as hereinafter described. The priming pump comprises a cylinder 22 having a piston 23 located therein, on the piston head of Which the oppositely faced suction washers 24 and 25 are located. The outer end of the cylinder 22 is closed by a cap nut 26. The outer end of the piston 23 is provided with a few turns of a thread 23 which engages the cap nut 26. A knurled head 27 is provided upon the outer end of the piston 23, which head is grpped in operating the pump.

.valve containing member 28 is provided upon the inner end of the pump cylinder 22. This member 28 is provided with a conoidal recess or seat 29 therein and a passage or port 30 terminating in the apex of said seat. A nipple 31 is secured to the member 28 in alignment with the passage 30, the nipple having a gland 32 in threaded engagement -therewith by means of whichthe pipe 17 is secured to the nipple.

The port 30 is slightly enlarged at 33 and has a ball 34 located therein and fitting against a cone seat, the ball being held in po'- sition by means of a coiled spring 35. The outer end of the coiled spring is seated in the nipple 31, the spring and ball 34 acting as a check valve.

A diagonally extending port or passage 36 is formed in the valve member 28, the said port 36 terminating in the side of the oonoidal seat 29. The passage 36 is enlar ed at 37 and a nipple 38 which is in threa ed engagement w1t the member 28 is aligned with the passage. The nipple has a passage 39 extending therethrough which is in communication withthe pipe 16 leading to the T 13 below the fuel supply tank 11. As' coiled spring 40 is seated in the enlarged recess 37 in the valve member 28 and extends into an enlarged portion 41 of the nipple 38 having its outer end bearing against a Iball 42. The spring 40 and ball 42 operate as a check valve to prevent the flow of fuel back into the fuel supplly tank after it is drawn out by means of t e piston 23.

The cylinder 22 is connected in any desired manner to the member 28 at 43. rlhe members 24 and 25 are held in position upon the piston 23 by a nut 44 in threaded enagement with the inner end of the piston. ecured to the inner end of the piston 23 is a stud 45 having a ball 46 ri idly formed upon the inner end thereof. eated in the conoidal seat 29 is a valve member 47 conforming in outside contour to the seat 29 in the member-28 and having a recess 48 in its inner end into which the ball 46 upon the stud 45 extends. A nut 49 encircles the stud 45 and is in threaded engagement with the rear end of the member 47, the said nut 43 having a loose t relative to the stud 45 so that the member 47 is connected to the pistcn 23 bya universal joint having a limited p ay.

In the operation of the device the operator grasps the knurled head 27 and turns the device to the left until the threads 23 on the rear end of the piston 23 are out ofv engagement with the nut 26, whereupon the operator pulls the piston backward, which has the ,eiect of drawing a supply of fuel out of the fuel tank 11 through the ipe 16, the nipple 38 and the passage 36 in t e member 28, into the cylinder 22. The operator thereupon pushes down upon the head 27 and forces the fuel out of the cylinder 22 through` the passage 30 and into the pipe 17 to the 'Ts 19 and;

20 and L. 21 andinto the engine manifold, thus forcing a supply of atomized fuel to the engine. The operatorthereuponturns to the right the head 27 upon the piston 23, which has the effect of posltively and firmly seating the member 47 in the conoidal seat 29, thus e'ectively closing u each of the passages 30 and 36 through t e valve member 28.

I t will thus be understood that should the cylinder 22 be jarred out of proper alignment with the member 28, or the piston rod fail to be located exactly in the center of the cylinder, the member 47 will still enter the seat 29 so as to seat properly and to edentively close each of the passages 30 and 356 without danger of leakage or of allowing theV air or gas to pass into the engine through the passage 30.

While we have described more or less precisely the details of construction, we do not wish to be understood as limiting ourselves thereto, as we contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of our invention.

We claim: 1. in a pump having a fluid passage therein, a piston having a ball headed stud ex tended therefrom, a valve member having av ball seat engaging the ball head on the stud in such manner as to permit limited play therebetween, the valve member serving to close the Huid passage in one position of the piston.

2. ln a pump, a conoidal valve seat formed in the Wall thereof, fluid' intake and exhaust passages leading from the valve seat, a pump piston having a ball headed! stud extending from its inner end, a conoidal valve member having a ball seat engaging the ball head'on the stud in such manner as to permit limited play therebetween, intertting threads upon the piston and pump adapted to be brought into engagement to positively force the piston in such maner as to caus'e the valve mem'ber to fit in the valve seat to close the passa es.

Signed at Chicago, illinois, this 4t day of Februar 1921.

PTER J. JORGENSEN. @ENCE H. JGRGENSEN.- 

